A former gang member known as the 'monster' has turned his life around, channeling his past into a mission to build an inclusive gym community in Singapore.
Luke Yeo, 33, was a skinny teenager bullied at school who turned to a gang for protection. He dropped out of secondary school, got his first tattoo at 13, and was sentenced to 12 months' jail at 22 for illegal gambling. His grandmother, who raised him in a cramped flat, begged police not to arrest him.
Prison was a wake-up call. Upon release, his grandmother had died and he had only $200. With no formal education, he started freelance personal training on Carousell, using his own physical transformation to attract clients.
He opened Unstoppable Fitness four years ago in Shenton Way. The name is about encouraging anyone to try, regardless of background. He says it's often the 'biggest guys' covered in ink who are most willing to help strangers in the gym.
Now training over 200 clients from ages 15 to 70, Mr. Yeo dreams of opening another location and stepping on the competitive bodybuilding stage again.
Left: An old photo of Mr Luke Yeo, aged 17. Right: A recent photo of Mr Yeo in his gym. (Photos: Luke Yeo)
His grandmother once told him, 'Whatever I have, even S$1 -- the S$1 is yours.' He carries that lesson into his work, including a charity event for the Rare Diseases Society of Singapore where his team performed 1,000 push-ups.
'I cannot choose my parents, I had no investors or partner, but I got to choose my own path,' he said. 'At least, I think I can inspire some people now.'
A quote written by Mr Luke Yeo on a wall at his gym on Apr 16, 2026. (Photo: CNA/Mak Jia Kee)